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Description

Details

Inverter topology
The coolcept inverter topology was first implemented in the singlephase
StecaGrid. It achieved optimum efficiency ratings thanks to the
innovative switching concept. The three-phase coolcept3 inverters
also benefit from the advantages of this switching concept. The
three-phase topology is fully reactive current capable and therefore
set up to meet demands that may be made in future as well.
Always symmetrical
The advantage of three-phase feeding is that the produced solar
capacity is always symmetrically distributed on all three power
conductors to the public power grid. This is the case across the
whole output range offered by these inverters. The symmetrical
feed-in is very much in the interests of the power supply companies,
and is also compatible with domestic three-phase consumption.
Highest efficiency with longer service life
The high efficiency results in a peak efficiency of 98.6 %, which
means that less power is lost that must be dissipated into the environment.
This improves your yields.
As at least two phases of a three-phase feed-in design feed energy
into the grid, it is not necessary to provide for intermediate energy
storage in the device, as must be done in the case of single-phase
feed-in. For this reason, the coolcept3 inverters dispense completely
with the electrolytic capacitors that are required for intermediate
storage. These capacitors may influence the service life of electronic
devices as they may dry out. Therefore by using coolcept3 inverters,
plant operators may expect to benefit from their long service lives.
In addition to this, a new and unique cooling concept inside the
inverter ensures an even distribution of the dissipated heat and a
long service life for the device.
Product design and visualisation
The StecaGrid has a graphical LCD display for visualising the energy
yield values, current performance and operating parameters of the
system. Its innovative menu allows individual selection of the various
measurements. The guided, pre-programmed menu allows easy
final commissioning of the device.
Installation
The lightweights with only 10 kg can be easily and safely
mounted on a wall. The supplied wall bracket make mounting
of the device simple and convenient. The device does not
need to be opened for installation. All connections and the
DC circuit breaker are externally accessible. For making DC connections,
Sunclix mating connectors are included in the scope of supply.
Product features
∙ Highest efficiency
∙ Three-phase, symmetrical grid feeding
∙ Simple installation
∙ Integrated data logger
∙ Firmware update possible
∙ Low housing temperature at full load
∙ Functionally perfect, environmentally-friendly plastic housing
∙ Lowest possible own consumption
∙ Integrated DC circuit breaker
∙ Protective insulation according to protection class II
∙ Very long service life
∙ Droop Mode for integration in hybrid systems (further information:
Catalogue Steca PV Off Grid / Single-phase and threephase
AC hybrid systems)
∙ Fixed voltage mode for other energy sources
∙ Service menu for parameter adjustment
∙ 7-year warranty after registration
∙ Storage-ready: ready to be connected to an energy storage
system
∙ Optimised shadow management using global MPP tracking
Displays
∙ Multifunction graphical LCD display with backlighting
∙ Animated representation of yield
Operation
∙ Simple menu-driven operation
∙ Multilingual menu navigation